Luis,
Can you tell me what your Ls' measurement was and the Cs / Cd values used?
I have used this coil, but did not specifically characterize alignment.
The COMM capacitors certainly have an impact. They change the modulation depth of the communication…
Robert,
The calculations for the capacitors seem reasonable.
The issue now is the coil size. If you are using a standard Qi Transmitter, you will have great difficulty getting this system to work. The coupling between the coils is not enough to work consistently…
Hello Jason
You have a couple of options for the power section on the TIDA-00334.
1.) Low cost logic drive used on the TIDA-00334---replacement for CSD25302Q2 is the CSD25310Q2 (same footprint) and Mouser has them in stock. I will update Sch and BOM in…
Other Parts Discussed in Thread: BQ500212A , CSD25310Q2 Hi team,
I have a customer that is going through our BOM for the TIDA-00334 wireless power supply transmitter with the BQ500212A, and there are a few values that are not making sense:
http://www.ti…
Komal,
On the Receiver side you could choose a standalone RX and combine it with a linear charger like the bq51003 (RX optimized for 2.5W) and bq25100 (linear charger for wearables).
These devices are designed for a very small solution size and small…
Edgar,
Please verify the version of the bq51050B datasheet you are referencing. The current datasheet was revised in January 2014 and has corrected equation 5 (as you note above).
TIDA-00329 does not use a 10mm coil. The coils used for evaluation were…
James,
There are many RX coils that would work for transferring power at the size you are discussing. At this size (13mm x 30-50mm) I would suggest an oval/rectangular RX coil. In general, an RX system of the size you discuss would be better suited for…
Eiven,
TIDA-00329 testing was done several ways with multiple RX coils. The results vary with each setup. The Test Report shows testing done with the TDK coil with a standard EVM box (see the bq51003 EVM for the black box example) and the standard…
Hello Gianluca
The bq500210EVM-689 is our 19V input TX, WPC TX type A1 or A10. The coil should have an inductance in the range of 24uH. Also low DCR is desirable.
TX is a resonant converter topology and even with no load on the RX the circulating current…
Hello user3556070,
Thanks for providing this material.
To charge a battery with the bq51050BEVM, the battery should be tied like this: BAT+ to J3(OUT), BAT- to J4(prefer J4 over J2 although it`s the same node).
J1(+) and J2(-) is for an additional DC…